12 Free Tools for LitRPG Authors, and When Each One Is Worth Using

The most useful free tools for a LitRPG author are the ones that do one recurring job well: logging stats by chapter, checking two status windows against each other, testing an XP curve, running a damage formula, working out loot odds, and preparing a chapter for Royal Road. This list covers twelve such tools. All of them run in your browser, need no account, and state their own limits.

Disclosure: WriteIDE makes every tool on this page, and also makes the free WriteIDE desktop app. This is a list of our own tools, not a survey of the whole market. For writing applications, see the separate comparison of LitRPG writing software, which includes products we do not make. A spreadsheet and a word processor are still perfectly good tools; where one is enough, we say so.

How we chose these twelve

We picked tools by four criteria, so you can apply the same ones to any tool you are considering:

1. It does one job you repeat. A one-time curiosity does not make the list.
2. It runs in the browser and asks for no account. You can try it in under a minute.
3. It states its limits. Each tool's FAQ says what it does and does not do, and we repeat the main limit below.
4. It produces something you can use. That means a table, HTML for your chapter, a CSV or a number you can act on, not just a display.

The tools we left out, such as the name generators and the author-note builder, are covered on the free tools hub.

The twelve at a glance

Stat and system tools

1. LitRPG Stat Tracker

Use it when your numbers have started to drift between chapters. You list your stats with a starting value, then log each change by chapter, and the tracker shows what every stat was at the chapter you pick. You can copy a Royal Road stat block for that chapter and download the values as a CSV.

Limits. It follows one character at a time. It keeps the ledger in your browser's local storage rather than uploading it, and it never reads or edits your manuscript. For a worked example of the ledger method, see how to keep LitRPG stats consistent across a series.

2. Stat Block Continuity Checker

Use it when you are revising and want to know whether a later status window agrees with an earlier one. Paste two stat blocks and it highlights every difference. You can also paste "receipts" such as STR +3, and it flags receipts that do not match the real change.

Limits. A stat that goes down may be intentional, so it reports evidence and does not invent rules. If labels repeat, it uses the last value and names the duplicates. See how to catch continuity errors in stat blocks for the wider workflow.

3. XP Curve Visualizer

Use it when you are choosing how fast characters level. It compares built-in linear, exponential, D&D-style and cultivation curves, or plots your own formula, for 5 to 100 levels, with a table of XP per level and the running total. You can copy the table into a spreadsheet or download the chart.

Limits. A custom formula can use only level as its variable. Pair it with linear versus exponential growth for the design reasoning.

4. Damage Formula Sandbox

Use it when a fight depends on a formula and you want to see how it behaves across a range. Type a formula with your own variable names, adjust sliders, and the sweep graph shows the result as one variable changes.

Limits. Results are floored to whole numbers, the way LitRPG stats usually are, while intermediate steps stay decimal, so a formula can show 7 where a hand calculation gives 7.5.

5. RPG Stat Build Calculator

Use it when you are building a starting character or a class and want to see what a point pool buys. Spend points across your own attributes and test derived-stat formulas. Export the build as text, JSON or a PNG.

Limits. In this version each allocated point costs one from the pool. It does not use tabletop point-buy cost tables.

6. Character Progression Planner

Use it when you want to see the shape of a character's growth across a book. Enter milestones in story order with a level and a power number you define, and it flags spikes, plateaus and regressions. A spike is a gain larger than 1.75 times your median positive gain, checked once you have at least three gains.

Limits. It only analyzes the numbers you enter, and it is saved only if you choose to save locally in that browser.

Items and presentation tools

7. Loot Drop Calculator

Use it when you want a "rare" drop to be as rare as you intended. Build a weighted table or a set of independent chances, pick a target item, and see the average number of attempts to its first drop and the chance of at least one in N attempts. A simulation rolls a real sample beside the theory.

Limits. It models probability, not whether a drop is satisfying in a scene. The tool itself notes that at the average number of attempts you have the item only about 63 percent of the time, so plan for unlucky runs.

8. Character Sheet Generator

Use it when you want a clean character sheet inside a chapter. Fill in class, level, stats, skills and gear, give items a rarity, and copy Royal Road HTML or download a PNG. The rarity is printed as a word as well as a color.

Limits. It formats what you type. It does not remember how the sheet changed over the book; that is the job of tool 1 or a ledger.

9. Royal Road Blue Box Generator

Use it when you need a system message, such as a level-up, quest or warning, in a Royal Road chapter. It has six presets (System, Quest, Danger, Skill, Arcane and Plain) and produces plain HTML you paste into the chapter's source view. The step-by-step blue box guide walks through a full example.

Limits. The published box can look slightly different from the preview, because Royal Road adds its own thin table border. Check the platform preview before you publish.

10. Google Docs to Royal Road HTML Cleaner

Use it when you draft in Google Docs or Word. Paste the formatted chapter and it returns safe HTML with a live preview and a cleanup receipt, or a plain-text fallback.

Limits. Pasted images are removed on purpose, because a pasted image can be a temporary clipboard object or a private document link. The cleaner reports them so you can add a hosted image through Royal Road yourself.

Publishing tools

11. Web Serial Release Planner

Use it when you post on a schedule. Enter your buffer of written-but-unposted chapters and how many you write and post per week, and it shows how long the buffer lasts and the date it runs out. It also shows whether you could keep two, five or ten chapters ahead.

Limits. It is arithmetic on your own inputs and never suggests a price for any advance tier.

12. Reading Time and Chapter Pacing Calculator

Use it when you want to know how long a chapter takes to read. It divides a word count by a reading speed (250 words a minute by default, adjustable from 150 to 400) and also estimates print pages and audiobook length.

Limits. The page and audiobook figures are rough estimates, and its pacing verdict is a guide, not a rule. The pasted text is not kept.

Which one should you start with?

• Numbers are drifting: start with tools 1 and 2.
• You are designing a system: start with 3, 4 and 5.
• You post to Royal Road: start with 9 and 10.
• You post on a schedule: start with 11.

When a spreadsheet is enough

If your system is light and your book is short, a spreadsheet beside your manuscript is a sound choice, and none of these tools is required. They help most when you repeat a job often enough that a purpose-built page saves time. When the log, the manuscript and the stat blocks have grown into three places to update, a project that keeps them together can help. WriteIDE is our free desktop app for that: as of version 0.7.5 it records stat changes at the scenes where they happen, inserts stat blocks that show a character's values at a chosen story point, runs on macOS, Windows and Linux, and keeps your project on your computer with no account. You can also use it only as a tracker beside another editor; see how to move a manuscript.

Frequently asked questions

Are these LitRPG tools really free?

Yes. Each tool is free to use, runs in your browser and needs no account. The WriteIDE desktop app is free as well.

Do the tools upload my writing?

The tools run in your browser. Each tool page explains what, if anything, it saves; for example, the Stat Tracker keeps your ledger in your browser's local storage, and the Reading Time Calculator keeps nothing you paste.

Which tool should a beginner try first?

If you are designing a system, try the XP Curve Visualizer or the Damage Formula Sandbox. If you already have chapters, try the Stat Tracker or the Continuity Checker.

Do I need the WriteIDE app to use them?

No. Each tool stands on its own. The app is for keeping the manuscript, character history and stat blocks together in one project.

Are there tools for names and worldbuilding?

Yes. The tools hub also has generators for class, skill, monster and cultivation realm names, plus a quest builder, a rarity color palette and an author note box.

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Written for WriteIDE 0.7.5, October 2026. Tool behavior is described as of that date.