# TMTL eDSS vs B.B Synthetics

The clearest difference is update cadence: B.B Synthetics at every 2 days against TMTL eDSS's every 4 months. TMTL eDSS's advantage is iOS requirement (13.4 vs 15.5). On price, ads, in-app purchases and device support there is nothing between them.

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

TMTL eDSS ships an update every 4 months, B.B Synthetics every 2 days. The most recent releases landed on October 30, 2026 and October 31, 2026 respectively.

## The numbers

| Metric | TMTL eDSS | B.B Synthetics |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 4 months | **Every 2 days** |
| Size | 36 MB | 65 MB |
| Requires iOS | **13.4** | 15.5 |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Saravanan Pachaiappan](https://appshunter.io/developer/1715793438) | [Akshay Nahata](https://appshunter.io/developer/6776107525) |

## What reviewers say

### TMTL eDSS

[App page](https://appshunter.io/ios/app/tmtl-edss/id6737550264)

**Features:** macOS Compatibility

**In-app purchases:** none


### B.B Synthetics

[App page](https://appshunter.io/ios/app/bb-synthetics/id6776107523)

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

**In-app purchases:** none


## Frequently asked questions

### Is TMTL eDSS free?

TMTL eDSS is free to download, with no in-app purchases.

### Is B.B Synthetics free?

B.B Synthetics is free to download, with no in-app purchases.

### Do TMTL eDSS or B.B Synthetics have ads?

Neither TMTL eDSS nor B.B Synthetics shows ads.

### Which is updated more often, TMTL eDSS or B.B Synthetics?

TMTL eDSS ships an update every 4 months, and B.B Synthetics every 2 days. Most recently, TMTL eDSS was updated on October 30, 2026 and B.B Synthetics on October 31, 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.*