# FitBench — Curve Fitting App

> Curve Fitting App (iPhone/iPad app by Ron Maayan.)

- Source: https://appshunter.io/ios/app/fitbench/id6789315909 (this page in markdown: same URL + `.md`)
- Developer: [Ron Maayan](https://appshunter.io/developer/6789315911)
- Category: Productivity
- Price: Free with in-app purchases
- Age rating: 4+
- Requires: iOS 17.0 · 2 MB
- Languages: American English
- Released: 2026-09-23
- Data updated: 2026-10-25

## What is FitBench?

FitBench turns raw measurements into a finished figure in seconds. Paste a table straight from Excel or Numbers, import a CSV, or just snap a photo of a printed or handwritten data table and let on-device text recognition read the numbers for you, no typing, no cleanup, nothing ever leaves your device. FitBench automatically detects the shape of your data and picks a starting model from a full scientific library - Michaelis–Menten, dose–response (4PL/5PL), one- and two-phase decay and association, Gaussian and other peaks, sigmoidal growth, linear and polynomial, or your own custom equation - and fits it instantly, with no initial guesses required. Drop in up to seven Y columns against one shared X and fit them all at once, each with its own model, overlaid on a single colour-coded graph with a side-by-side table comparing every fit's parameters. Every result comes with a plain-language verdict and real statistics - R², AICc/BIC, RMSE, residual checks, and each parameter with its standard error and 95% confidence interval - so you can tell when a high R² is quietly hiding a bad fit. Fine-tune with weighting, robust fitting that flags outliers automatically, fixed parameters and bounds, log axes, error bars, and column transforms with custom formulas. When you're done, export a publication-ready figure as PNG, vector SVG, PDF, or CSV - complete with a ready-to-paste methods sentence — and save unlimited projects. Powerful enough for the lab, simple enough that your first great fit is completely free.

Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

## Pricing and in-app purchases

Base price: Free.

**Subscriptions**

| Subscription | Price | Period |
| --- | --- | --- |
| FitBench Pro Yearly | $39.99 | per year |
| FitBench Pro Monthly | $4.99 | per month |

**One-time purchases**

| Purchase | Price | Type |
| --- | --- | --- |
| FitBench Pro Lifetime | $79.99 | one-time |


## Is FitBench safe?

Not enough ratings yet to assess FitBench.

## Is FitBench legit?

FitBench has limited verification signals. The AppsHunter Legitimacy Score for FitBench is 58 out of 100 points across 7 verification signals from App Store and developer data.


## Version history (last 2 releases)

### 1.1 — 2026-10-10

• New: Pro Lifetime — unlock every Pro feature with a single one-time purchase.
• Smoother, subtler animations throughout the app.
• Pro status now loads right away at launch, even offline.

### 1.0 — 2026-09-24

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 2026-10-25.*