# Varint Calculator

> Varint Calculator (iPhone/iPad app by Elusive Data.)

- Source: https://appshunter.io/ios/app/varint-calculator/id6752467176 (this page in markdown: same URL + `.md`)
- Developer: [Elusive Data](https://appshunter.io/developer/1839373824)
- Category: Utilities, Productivity
- Price: $29.99
- Age rating: 4+
- Requires: iOS 15.1 · 37 MB
- Languages: American English
- Released: 2025-09-25
- Data updated: 2026-05-19
- User reviews in markdown: https://appshunter.io/ios/app/varint-calculator/id6752467176/reviews.md

## What is Varint Calculator?

Varint Calculator is a powerful utility for anyone working with SQLite databases, digital forensics, or low-level data analysis. More than just a simple decoder, it provides on-the-fly interpretation of varints, serial types, and payload calculations so you can decode, understand, and validate data with confidence.

Key Features:

Live Varint Decoding – As you type a hex string, the app automatically validates input, checks for complete byte pairs, and instantly converts to the correct integer value.

Smart Serial Type Detection – Automatically identifies SQLite serial types (e.g., integer, floating point, text, blob) and shows the corresponding length or interpretation.

MSB Guidance – Highlights when the Most Significant Bit indicates additional bytes are required, helping you learn to decode varints manually.

Overflow Page Calculations – Uses a default page size of 4096 bytes to determine when overflow occurs, and calculates exactly how many bytes remain in the local payload. Users can adjust page size with a long press for different database configurations.

Interactive Tutorial Mode – Step-by-step walkthrough of varint decoding, giving you the skills to manually interpret values as well as rely on the calculator.

History Tracking – Saves recent calculations for quick reuse. Clear individual entries or wipe the full history when needed.

Designed for Accuracy and Learning – Built for forensic examiners, database specialists, and students who want a reliable reference and teaching aid.

Whether you are analyzing SQLite files in a forensic case, validating database structures, or learning how varints work, Varint Calculator combines practical power with interactive education.


## Version history (last 2 releases)

### 2.0.0 — 2025-10-01

Fixed a bug where the K value for overflow calculation had the header value subtracted from it.

### 1.0 — 2025-09-25

No release notes.

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*Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-05-19.*