# A2Calc vs ServiceTitan Field

The clearest difference is review sentiment: A2Calc at 94% against ServiceTitan Field's 6%. A2Calc also leads on rating (4.7 vs 3.5) and iOS requirement (12.0 vs 17.4). ServiceTitan Field's advantage is price (Free vs $6.99) and update cadence (every 11 days vs every 3 months). On ads, in-app purchases and device support there is nothing between them.

ServiceTitan Field is free to download; A2Calc costs $6.99 up front. Neither carries in-app purchases, so what you see is what you pay.

A2Calc holds the better App Store score, 4.7 against 3.5. That said, the two scores are not equally well evidenced: ServiceTitan Field has 5.5K ratings behind it against 10, so its average is the more settled of the two. Written reviews point the same way: 94% of A2Calc's written reviews are positive against 6% of ServiceTitan Field's.

A2Calc ships an update every 3 months, ServiceTitan Field every 11 days. The most recent releases landed on October 23, 2026 and October 30, 2026 respectively.

## The numbers

| Metric | A2Calc | ServiceTitan Field |
| --- | --- | --- |
| Price | $6.99 | **Free** |
| Rating | **[4.7 (10 ratings)](https://appshunter.io/ios/app/a2calc/id589583757/reviews)** | [3.5 (5.5K ratings)](https://appshunter.io/ios/app/servicetitan-field/id1629928933/reviews) |
| Number of ratings | 10 | **5.5K** |
| Positive reviews | **93.8% of reviews** | 6.4% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 3 months | **Every 11 days** |
| Monetization | Paid | **Free** |
| Size | 2 MB | 441 MB |
| Requires iOS | **12.0** | 17.4 |
| Devices | iPhone, iPod | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Farren Domenici](https://appshunter.io/developer/583666476) | [ServiceTitan Inc.](https://appshunter.io/developer/977674672) |

## What reviewers say

### A2Calc

[App page](https://appshunter.io/ios/app/a2calc/id589583757)

This app assists locksmiths by automatically calculating pinning charts for A2 SFIC systems. It supports 6 or 7 pin systems and includes features like a randomize function, control finder, and project saving. Projects are encrypted and can be shared via AirPrint or email.

**Highlights:** Automatic pinning chart calculation, Supports 6 or 7 pin systems, Randomize chart generation, Control Finder for lost control keys, Save up to 16 projects, Encrypted and passcode-protected projects, Share projects via AirPrint or email

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

**In-app purchases:** none


### ServiceTitan Field

[App page](https://appshunter.io/ios/app/servicetitan-field/id1629928933)

Empower field technicians with comprehensive job details, customer history, and communication logs. Streamline service delivery by creating estimates, recording work with photos, and accepting payments directly in the field. This app ensures seamless, real-time synchronization with office operations, eliminating the need for manual paperwork.

**Highlights:** Job history and customer profiles, Recorded calls and photos, Estimate building in the field, Work completion recording, Payment processing, Real-time office sync

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

**In-app purchases:** none

**What reviewers like**

- 🚀 Works well
- 🚀 Great UI
- 🚀 OCR works well
- 🚀 Timesheets are good

**What reviewers complain about**

- 🐛 Crashes consistently
- 🐛 Glitchy and malfunctioning
- 🐛 Convoluted invoicing
- 👎 Missing features
- 👎 Less capable than previous version

**Reported bugs**

- Can't clock in/out
- Can't write up job summary properly
- Frequent sign-outs

**Requested features**

- Ability to add new customers
- See job duration for labor charges
- Sell memberships in the field


## Frequently asked questions

### Is A2Calc free?

A2Calc costs $6.99, with no in-app purchases.

### Is ServiceTitan Field free?

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

### Which has better reviews, A2Calc or ServiceTitan Field?

A2Calc is rated higher. A2Calc averages 4.7 out of 5 from 10 ratings, while ServiceTitan Field averages 3.5 from 5.5K ratings.

### Do A2Calc or ServiceTitan Field have ads?

Neither A2Calc nor ServiceTitan Field shows ads.

### Which is updated more often, A2Calc or ServiceTitan Field?

A2Calc ships an update every 3 months, and ServiceTitan Field every 11 days. Most recently, A2Calc was updated on October 23, 2026 and ServiceTitan Field on October 30, 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.*