# BaseLedger vs Tracking Lab

The clearest difference is iOS requirement: BaseLedger at 15.1 against Tracking Lab's 17.0. On price, update cadence, ads and in-app purchases there is nothing between them.

Both are free to download. BaseLedger sells 2 in-app purchases, starting at $2.99 per month and Tracking Lab sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.

BaseLedger ships an update every 8 days, Tracking Lab every 4 days. Both last shipped on October 11, 2026.

## The numbers

| Metric | BaseLedger | Tracking Lab |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | — | 100.0% of reviews |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Every 8 days | **Every 4 days** |
| Monetization | — | Free with in-app purchases |
| Size | 57 MB | 4 MB |
| Requires iOS | **15.1** | 17.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 9+ | 4+ |
| Developer | [moegi Ochi](https://appshunter.io/developer/1896764311) | [Takayuki Hamuro](https://appshunter.io/developer/1875707249) |

## What reviewers say

### BaseLedger

[App page](https://appshunter.io/ios/app/baseledger/id6770819002)

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| STANDARDプラン | $2.99 | per month |
| PRO | $5.99 | per month |


### Tracking Lab

[App page](https://appshunter.io/ios/app/tracking-lab-pitch-design/id6792044187)

Design, refine, and test baseball pitches with realistic physics simulations. Analyze metrics like velocity and spin rate, practice your release, and compete on a global leaderboard. All features run offline on your device.

**Highlights:** Design pitches with real-time metric response, Physics simulation of pitch trajectory, Practice release repeatability, Test pitches against a target, Global leaderboard competition, Offline device-based operation

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Lab Pro | $3.99 | one-time |


## Frequently asked questions

### Is BaseLedger free?

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

### Is Tracking Lab free?

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

### Do BaseLedger or Tracking Lab have ads?

Neither BaseLedger nor Tracking Lab shows ads.

### Which is updated more often, BaseLedger or Tracking Lab?

BaseLedger ships an update every 8 days, and Tracking Lab every 4 days. Most recently, BaseLedger was updated on October 11, 2026 and Tracking Lab on October 11, 2026.

---

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