Application record · ID 318898907
HVAC Formulator
by Historycentral.com · Productivity · $4.99
- Average rating
- 2.0
- 1 ratings
- Ratings
- 1
- On store since
- 2009
- 16 yrs 289 d
- Languages
- 1
Analyst summary
Last verified 5 Aug 2026HVAC Formulator is a Productivity application published by Historycentral.com. It holds a 2.0-star average across 1 public ratings.
It was last updated 22 Mar 2026. The listing has been on the store for 16 yrs 289 d.
On the listing it is a 72.8 MB download, runs on iPhone 5s and newer · iPad.
Position in category
Each bar shows where HVAC Formulator sits in the distribution of Productivity apps we track. Percentiles are computed over apps with the field observed, not the whole category.
Distribution computed with the category report · Full category report
Review intelligence
Low confidenceUsers find the app disappointing, not worth the cost, and lacking in useful features.
Pretty nice so far. It has been helpful in class.
App I thought this would be a quick way to calculate the zones of a job from the pictures is showing that you can
Trajectory: declining · recomputed when new reviews arrive · limitations
Health timeline
A dated record of what has actually happened to this app — launch, updates, price moves and record-board milestones. Every point is a stored observation, never an estimate.
- 13 Jul 2026 Board Entered Oldest Survivor in Productivity Best position observed: #5.
- 22 Mar 2026 Update Updated to v3.04 The most recent version we observed on the listing.
- 9 Jun 2009 Launch Launched on the App Store Original release date stated on the listing.
Dates are read from the listing and from our own daily observations; the rating curve accrues going forward. How we track.
Listing & advisories
Download size
72.8 MB
Minimum iOS
18.6
Devices supported
iPhone 5s and newer · iPad
Age rating
4+
Advisories
None listed by the publisher
Screenshots
10 on the listing
Screenshots are hotlinked from the public store listing and belong to the publisher.
Rankings this app appears on
Peer set
Peers are well-rated apps in Productivity, selected by category and rating — not by similarity of description, so the comparison is like-for-like on scale.
| App | Rating | Ratings | Price |
|---|---|---|---|
| HVAC Formulator | 2.0 | 1 | $4.99 |
| Granola - AI Meeting Notes | 5.0 | 11.2K | Free |
| Brick - Ditch Distractions | 4.9 | 49.1K | Free |
| 番茄ToDo-极简高效自律番茄钟 | 4.9 | 4,843 | Free |
| MFIT Personal | 4.9 | 3,990 | Free |
| QuickScan:PDF OCR Text Scanner | 4.9 | 3,891 | Free |
| Keeper Password Manager | 4.9 | 228.8K | Free |
Questions this record can answer
How was every figure on this page produced?
Each figure is read from public App Store metadata or computed from it, dated to when we read it, and traceable to a stored row. Percentiles, cadence, longevity and sentiment are derived by us; ratings, prices, sizes and dates are taken as the store reports them.
Why can the star average and recent opinion disagree?
The star average is cumulative over the app’s whole life, so recent opinion barely moves it. Any sentiment figure we compute reads only recent review text, which is why it turns first. Treat a divergence as an early indicator, not a verdict.
What can this page not tell you?
Downloads, revenue, active users, subscription pricing inside the app, and anything about security or data handling. None of those are visible in public store metadata, so we do not estimate them.
Provenance
- Source
- Public App Store listing metadata and public customer reviews.
- Collection window
- Last read 5 Aug 2026. Listing re-read daily; reviews re-read on a slower cadence.
- Derived figures
- Percentiles, update cadence, longevity and sentiment are computed by us, not supplied by the store.
- Corrections
- No corrections on this record. Report an error
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