# iSurv 7 vs The Chippy Calc

The clearest difference is review sentiment: The Chippy Calc at 100% against iSurv 7's 33%. iSurv 7's advantage is in-app purchases (none vs 3) and update cadence (every 2 weeks vs every 2 months). On price, ads, device support and iOS requirement there is nothing between them.

Both are free to download. The Chippy Calc sells 3 in-app purchases, starting at $3.99 per month. iSurv 7 asks for nothing beyond the download.

iSurv 7 ships an update every 2 weeks, The Chippy Calc every 2 months. Both last shipped on October 24, 2026.

## The numbers

| Metric | iSurv 7 | The Chippy Calc |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[4.5 (2 ratings)](https://appshunter.io/ios/app/the-chippy-calc-builder-tools/id6499256065/reviews)** |
| Number of ratings | — | **2** |
| Positive reviews | 33.3% of reviews | **100.0% of reviews** |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | **Every 2 weeks** | Every 2 months |
| Monetization | **Free** | Free with in-app purchases |
| Size | 175 MB | 76 MB |
| Requires iOS | **15.0** | 16.4 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Secure Hub Pty Ltd](https://appshunter.io/developer/316993704) | [Vike Digital Pty Ltd](https://appshunter.io/developer/1742926734) |

## What reviewers say

### iSurv 7

[App page](https://appshunter.io/ios/app/isurv-7/id1248632831)

This app offers real-time situational awareness for field teams. It enables users to share live locations, photos, voice messages, and annotated maps. Be aware that continuous background GPS and VoIP usage may impact battery life and data charges.

**Highlights:** Real-time location sharing, Photo sharing, Voice message capabilities, Map annotation tools, Situational awareness for teams

**Features:** macOS Compatibility

**In-app purchases:** none


### The Chippy Calc

[App page](https://appshunter.io/ios/app/the-chippy-calc-builder-tools/id6499256065)

This app provides carpenters, builders, and DIYers with precise, visual construction calculations. It offers specialized tools for stairs, decks, rafters, and more, with support for both metric and imperial units. All calculations can be saved and accessed offline.

**Highlights:** Visual results with scaled diagrams, Metric and imperial unit support, Offline functionality, 14+ specialized construction calculators, Stair, deck, and rafter calculations, Linear cut list optimization

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Monthly | $3.99 | per month |
| Annually | $19.99 | per year |
| Lifetime Premium Access | $79.99 | one-time |


## Frequently asked questions

### Is iSurv 7 free?

iSurv 7 is free to download, with no in-app purchases.

### Is The Chippy Calc free?

The Chippy Calc is free to download, with in-app purchases available.

### Do iSurv 7 or The Chippy Calc have ads?

Neither iSurv 7 nor The Chippy Calc shows ads.

### Which is updated more often, iSurv 7 or The Chippy Calc?

iSurv 7 ships an update every 2 weeks, and The Chippy Calc every 2 months. Most recently, iSurv 7 was updated on October 24, 2026 and The Chippy Calc on October 24, 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.*