# TPCalc vs GelDoc Imager

The clearest difference is in-app purchases: GelDoc Imager at none against TPCalc's 4. GelDoc Imager also leads on ads (none vs shown). TPCalc's advantage is iOS requirement (15.0 vs 18.0). On price, update cadence and device support there is nothing between them.

Both are free to download. TPCalc sells 4 one-off in-app purchases. GelDoc Imager asks for nothing beyond the download.

TPCalc ships an update every 5 months, GelDoc Imager every 4 months. The most recent releases landed on October 28, 2026 and October 7, 2026 respectively.

## The numbers

| Metric | TPCalc | GelDoc Imager |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | — | 0.0% of reviews |
| In-app purchases | Yes | **No** |
| Ads | Yes | **No** |
| Update frequency | Every 5 months | **Every 4 months** |
| Monetization | — | Free |
| Size | 16 MB | 2 MB |
| Requires iOS | **15.0** | 18.0 |
| Devices | **iPhone, iPod** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Ahmet Erhan Ersan](https://appshunter.io/developer/1724558725) | [Vincent Pennetti](https://appshunter.io/developer/1856392443) |

## What reviewers say

### TPCalc

[App page](https://appshunter.io/ios/app/tpcalc/id6751998119)

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Remove Ads | $1.49 | one-time |
| Small support | $2.00 | one-time |
| Medium support | $5.00 | one-time |
| Large support | $10.00 | one-time |


### GelDoc Imager

[App page](https://appshunter.io/ios/app/geldoc-imager/id6756336912)

This specialized camera app offers scientists and researchers precise manual controls for capturing high-quality images of gel electrophoresis. It features advanced settings for focus, ISO, shutter speed, and multiple lenses, along with real-time image processing and automatic metadata stamping.

**Highlights:** Manual focus with 3x zoom preview, Adjustable ISO (50-12800), Customizable shutter speed (1/8000s to 30s), Multiple lens support (ultra-wide, wide, telephoto), Real-time contrast and saturation adjustment, Automatic metadata stamping, Settings persistence between sessions

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is TPCalc free?

TPCalc is free to download, with in-app purchases available.

### Is GelDoc Imager free?

GelDoc Imager is free to download, with no in-app purchases.

### Do TPCalc or GelDoc Imager have ads?

TPCalc shows ads; GelDoc Imager does not.

### Which is updated more often, TPCalc or GelDoc Imager?

TPCalc ships an update every 5 months, and GelDoc Imager every 4 months. Most recently, TPCalc was updated on October 28, 2026 and GelDoc Imager on October 7, 2026.

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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*