# ZEISS Transfer vs TrueLevel

The clearest difference is in-app purchases: ZEISS Transfer at none against TrueLevel's 1. TrueLevel's advantage is update cadence (monthly vs every 22 months). On price, ads, device support and iOS requirement there is nothing between them.

Both are free to download. TrueLevel sells 1 one-off in-app purchase. ZEISS Transfer asks for nothing beyond the download.

ZEISS Transfer ships an update every 22 months, TrueLevel monthly. The most recent releases landed on September 28, 2026 and September 27, 2026 respectively.

## The numbers

| Metric | ZEISS Transfer | TrueLevel |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 22 months | **Monthly** |
| Size | 53 MB | 3 MB |
| Requires iOS | **17.0** | 17.6 |
| Devices | **iPhone, iPad** | iPhone |
| Age rating | 17+ | 4+ |
| Developer | [Carl Zeiss AG](https://appshunter.io/developer/488066215) | [Daniil Mukashev](https://appshunter.io/developer/1833839105) |

## What reviewers say

### ZEISS Transfer

[App page](https://appshunter.io/ios/app/zeiss-transfer/id1228179320)

**In-app purchases:** none


### TrueLevel

[App page](https://appshunter.io/ios/app/truelevel-bubble-level-tool/id6760949015)

**In-app purchases (1)**

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


## Frequently asked questions

### Is ZEISS Transfer free?

ZEISS Transfer is free to download, with no in-app purchases.

### Is TrueLevel free?

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

### Do ZEISS Transfer or TrueLevel have ads?

Neither ZEISS Transfer nor TrueLevel shows ads.

### Which is updated more often, ZEISS Transfer or TrueLevel?

ZEISS Transfer ships an update every 22 months, and TrueLevel monthly. Most recently, ZEISS Transfer was updated on September 28, 2026 and TrueLevel on September 27, 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.*