# Builder's Formulator vs TigerPay

The clearest difference is in-app purchases: TigerPay at none against Builder's Formulator's 1. TigerPay also leads on update cadence (fortnightly vs every 2 months) and iOS requirement (13.0 vs 26.4). On price, ads and device support there is nothing between them.

Both are free to download. Builder's Formulator sells 1 one-off in-app purchase. TigerPay asks for nothing beyond the download.

Builder's Formulator ships an update every 2 months, TigerPay fortnightly. Both last shipped on October 27, 2026.

## The numbers

| Metric | Builder's Formulator | TigerPay |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[2.0 (3 ratings)](https://appshunter.io/ios/app/builders-formulator/id306247596/reviews)** | — |
| Number of ratings | **3** | — |
| Positive reviews | 0.0% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 2 months | **Fortnightly** |
| Monetization | Free | — |
| Size | 48 MB | 38 MB |
| Requires iOS | 26.4 | **13.0** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 17+ |
| Developer | [Historycentral.com](https://appshunter.io/developer/1744330560) | [Ora Tiger Technologies LLC](https://appshunter.io/developer/1673023299) |

## What reviewers say

### Builder's Formulator

[App page](https://appshunter.io/ios/app/builders-formulator/id306247596)

This comprehensive tool provides over 2,600 formulas, code charts, and technical drawings for construction professionals. It covers calculations for structural engineering, electrical, plumbing, HVAC, and financial aspects of building projects. Includes unit conversions and ADA accessibility references.

**Highlights:** Over 2,600 formulas, Plumbing code charts, Technical drawings, ADA accessibility references, Unit conversions, Save and revisit calculations, Mark favorites

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Builder Pro | $2.99 | one-time |


### TigerPay

[App page](https://appshunter.io/ios/app/tigerpay/id1673023297)

**In-app purchases:** none


## Frequently asked questions

### Is Builder's Formulator free?

Builder's Formulator is free to download, with in-app purchases available.

### Is TigerPay free?

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

### Do Builder's Formulator or TigerPay have ads?

Neither Builder's Formulator nor TigerPay shows ads.

### Which is updated more often, Builder's Formulator or TigerPay?

Builder's Formulator ships an update every 2 months, and TigerPay fortnightly. Most recently, Builder's Formulator was updated on October 27, 2026 and TigerPay on October 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.*