# Building Start vs Proof TAB

The clearest difference is update cadence: Proof TAB at every 8 days against Building Start's monthly. 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.

Building Start ships an update monthly, Proof TAB every 8 days. The most recent releases landed on August 16, 2026 and September 5, 2026 respectively.

## The numbers

| Metric | Building Start | Proof TAB |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[3.4 (8 ratings)](https://appshunter.io/ios/app/building-start/id442975774/reviews)** | — |
| Number of ratings | **8** | — |
| Positive reviews | 50.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Monthly | **Every 8 days** |
| Monetization | Free | — |
| Size | 12 MB | 935 MB |
| Requires iOS | 15.0 | 15.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Building Start](https://appshunter.io/developer/442975777) | [Jawad Jaber](https://appshunter.io/developer/828202845) |

## What reviewers say

### Building Start

[App page](https://appshunter.io/ios/app/building-start/id442975774)

This platform digitizes field testing for construction and engineering projects. It allows for centralized test plan creation and offline execution on field devices, synchronizing data back to the cloud upon completion.

**Highlights:** Centralized test plan authoring, Push test plans to field devices, Offline field testing capabilities, Data synchronization to cloud, Digital capture of construction projects, Support for TAB, Building Startup, Commissioning, Energy Audits

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

**In-app purchases:** none


### Proof TAB

[App page](https://appshunter.io/ios/app/proof-tab/id1640619327)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Building Start free?

Building Start is free to download, with no in-app purchases.

### Is Proof TAB free?

Proof TAB is free to download, with no in-app purchases.

### Do Building Start or Proof TAB have ads?

Neither Building Start nor Proof TAB shows ads.

### Which is updated more often, Building Start or Proof TAB?

Building Start ships an update monthly, and Proof TAB every 8 days. Most recently, Building Start was updated on August 16, 2026 and Proof TAB on September 5, 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.*