A2Calc vs ServiceTitan Field
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
A2Calc
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.
- 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
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A2 Small Format Interchangeable Core Calculator ---Programmed by a Locksmith, for Locksmiths--- Automatically calculates the pinning chart for A2 SFIC. Built for 6 or 7 pin systems, however, less can be achieved by using a decimal to erase a chamber. Minimum of a control and master key are required to make a chart. Additional change key available for all devices; 2 change keys available for 4" (and above) screen devices. Randomize function will generate completely random charts each time it is triggered. "Lock/Unlock" toggle disables/enables all inputs and functions to prevent unwanted/lost changes. Control Finder is an added bonus by reverse engineering a core to determine the control key's bitting. This is perfect when needing to remove multiple cores in a building when the control key has been lost. There are two methods for achieving the control key: 1. using the master, control, and bottom pins, or 2. using only the top/driver pins. Up to 16 different projects can be saved at any one given time. All projects are encrypted and protected with a passcode. AirPrint or Email projects with a single tap. Compatibility: iPhone / iPod touch on iOS 8.0 or later and iPad on iOS 12.0 or later. Found a bug? Something not working? Have a suggestion? Feel free to contact me via email: farren@phoxlocks.com
ServiceTitan Field
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.
- Job history and customer profiles
- Recorded calls and photos
- Estimate building in the field
- Work completion recording
- Payment processing
- Real-time office sync
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ARRIVE INFORMED Give your technicians all the information they need to make the right decisions on the job including job history, customer profiles, recorded calls, photos, CSR notes, and more. SELL AND COMPLETE WORK ALL IN ONE PLACE Quickly build estimates in the field, record completed work with photos and forms, and take payment to close out the job. SEAMLESS END TO END WORKFLOWS ServiceTitan’s Field App syncs automatically with the office, streamlining workflows, schedules, and job details to keep your team aligned in real time —no paperwork needed.
Screenshots
Verdict
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.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
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.
| Parameter | A2Calc | ServiceTitan Field |
|---|---|---|
| Price | $6.99 | Free — better |
| Rating | 4.7 (10 ratings) — better | 3.5 (5.5K ratings) |
| Positive reviews | 93.8% of reviews — better | 6.4% of reviews |
| Number of ratings | 10 | 5.5K — better |
| Update frequency | Every 3 months | Every 11 days — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Paid | Free — better |
| Devices | iPhone, iPod | iPhone, iPad |
| Requires iOS | 12.0 — better | 17.4 |
| Further details — not scored | ||
| Size | 2 MB | 441 MB |
| Age rating | 4+ | 4+ |
| Developer | Farren Domenici | ServiceTitan Inc. |
Customer experience
A2Calc
ServiceTitan Field
Bugs and requests
A2Calc
Not enough reviews yet to summarise bugs or requests.
ServiceTitan Field
Reported bugs
3 issues- Can't clock in/out
- Can't write up job summary properly
- Frequent sign-outs
Requested features
3 requests- Ability to add new customers
- See job duration for labor charges
- Sell memberships in the field
In-app purchases
A2Calc
No in-app purchases
ServiceTitan Field
No in-app purchases
Questions
Is A2Calc free?
Is ServiceTitan Field free?
Which has better reviews, A2Calc or ServiceTitan Field?
Do A2Calc or ServiceTitan Field have ads?
Which is updated more often, A2Calc or ServiceTitan Field?
Other comparisons
