# Exon Map Explorer vs TruLab Sample Tracker

The clearest difference is iOS requirement: Exon Map Explorer at 12.0 against TruLab Sample Tracker's 15.1. On price, update cadence, ads and in-app purchases there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

Exon Map Explorer ships an update every 5 weeks, TruLab Sample Tracker every 2 months. The most recent releases landed on May 17, 2026 and September 18, 2026 respectively.

## The numbers

| Metric | Exon Map Explorer | TruLab Sample Tracker |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[5.0 (11 ratings)](https://appshunter.io/ios/app/trulab-sample-tracker/id6443908394/reviews)** |
| Number of ratings | — | **11** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 5 weeks** | Every 2 months |
| Monetization | — | Free |
| Size | 8 MB | 58 MB |
| Requires iOS | **12.0** | 15.1 |
| Devices | iPhone, iPod | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [SAREPTA THERAPEUTICS, INC.](https://appshunter.io/developer/1604723220) | [TruLab, Inc.](https://appshunter.io/developer/1533473451) |

## What reviewers say

### Exon Map Explorer

[App page](https://appshunter.io/ios/app/exon-map-explorer/id1604723218)

**Features:** macOS Compatibility

**In-app purchases:** none


### TruLab Sample Tracker

[App page](https://appshunter.io/ios/app/trulab-sample-tracker/id6443908394)

This application simplifies the management of biological samples for clinical trials. It provides essential sample-level metadata, making tracking and organization straightforward for researchers and medical professionals.

**Highlights:** Biological sample metadata tracking, Clinical trial support, Easy-to-use interface, Sample-level data management

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Exon Map Explorer free?

Exon Map Explorer is free to download, with no in-app purchases.

### Is TruLab Sample Tracker free?

TruLab Sample Tracker is free to download, with no in-app purchases.

### Do Exon Map Explorer or TruLab Sample Tracker have ads?

Neither Exon Map Explorer nor TruLab Sample Tracker shows ads.

### Which is updated more often, Exon Map Explorer or TruLab Sample Tracker?

Exon Map Explorer ships an update every 5 weeks, and TruLab Sample Tracker every 2 months. Most recently, Exon Map Explorer was updated on May 17, 2026 and TruLab Sample Tracker on September 18, 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.*