HVAC Decoder vs Date Stamp Photos
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
HVAC Decoder
Decode HVAC model and serial numbers from major brands. This utility app provides thousands of model numbers and can email search results. It supports a wide range of HVAC equipment and offers close matches for unknown numbers.
- Decode HVAC model numbers
- Decode HVAC serial numbers
- Supports major HVAC brands
- Thousands of model numbers
- Email search results
- Close match functionality
- Report missing data
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This app will decode the model number nomenclature of most HVAC companies. It has all the major brand names with many thousands of model numbers. It will also decode the serial number for many HVAC companies. It has the ability to email the search results in HTML format via an installed mail client. App is effective at decoding model and serial numbers for packaged units, air conditioners / condensing units, air handlers, evaporator coils, furnaces, heat pumps, boilers, chillers, split systems / mini splits, geothermal systems, and more. If the model number is not found exactly it will try a close match. If there is no close match it will give you the option to report missing data. The data is constantly updated and purchase of the app gets you free updates forever.
Date Stamp Photos
Easily add permanent date and time stamps to your photos. Customize the appearance and position of the stamp for clear documentation or sharing. Process single images or multiple photos in batches directly on your device.
- Add date and time directly to photos
- Customizable stamp size, position, and style
- Optional shadow for readability
- Stamp single or multiple photos
- Fast batch export
- On-device processing
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Add a visible date and time stamp to your photos. Date Stamp Photos lets you place a clear, permanent date directly on your images—perfect for sharing, archiving, or documenting moments. Date Stamp Photos makes it easy to add a visible date and time to your photos. Unlike metadata, stamped dates remain visible wherever your photo appears—on messages, emails, listings, or social media sharing. Features • Add date and time directly to photos • Choose size, position, and style • Optional shadow for better readability • Stamp one photo or multiple photos at once • Fast batch export • Fully on-device — no uploads, no cloud Date Stamp Photos is built as a simple, reliable utility. Open it, stamp your photos, and move on.
Screenshots
Verdict
The clearest difference is rating: HVAC Decoder at 4.0 against Date Stamp Photos's 3.0. HVAC Decoder also leads on ratings volume (28 vs 1) and device support (3 vs 1). Date Stamp Photos's advantage is price ($1.99 vs $9.99). On update cadence, ads, in-app purchases and monetization model 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
HVAC Decoder costs $9.99 and Date Stamp Photos $1.99 up front. Neither carries in-app purchases, so what you see is what you pay.
HVAC Decoder holds the better App Store score, 4.0 against 3.0. That said, the two scores are not equally well evidenced: HVAC Decoder has 28 ratings behind it against 1, so its average is the more settled of the two.
Both ship on a similar rhythm, roughly every 3 months. The most recent releases landed on October 7, 2026 and October 17, 2026 respectively.
| Parameter | HVAC Decoder | Date Stamp Photos |
|---|---|---|
| Price | $9.99 | $1.99 — better |
| Rating | 4.0 (28 ratings) — better | 3.0 (1 ratings) |
| Positive reviews | 68.8% of reviews | — |
| Number of ratings | 28 — better | 1 |
| Update frequency | Every 3 months | Every 3 months |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Paid | Paid |
| Devices | iPhone, iPad, iPod — better | iPhone |
| Requires iOS | 14.0 — better | 17.6 |
| Further details — not scored | ||
| Size | 6 MB | 2 MB |
| Age rating | 4+ | 4+ |
| Developer | Charles Cope | OpsOh LLC |
Customer experience
HVAC Decoder
Date Stamp Photos
In-app purchases
HVAC Decoder
No in-app purchases
Date Stamp Photos
No in-app purchases
Questions
Is HVAC Decoder free?
Is Date Stamp Photos free?
Which has better reviews, HVAC Decoder or Date Stamp Photos?
Do HVAC Decoder or Date Stamp Photos have ads?
Which is updated more often, HVAC Decoder or Date Stamp Photos?
Other comparisons
