Comparison

PrerAp vs Superheat Subcooling PT Chart

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head

PrerAp

Free

🔧 Utilities

★ 4.52 ratingsView app →

Superheat Subcooling PT Chart

HVAC charging & PT chart

Free

🔧 Utilities

No ratingsView app →

About

PrerAp

This app allows voters to securely store their biographical information and generate QR codes. These codes can then be scanned during enrollment to quickly retrieve data, significantly reducing wait times at registration centers.

Highlights

Biographical data storage
QR code generation
Reduced registration time
Data retrieval via scanning

Features

Read full description

L'application permet à un électeur d'enregistrer toutes ses données biographiques et de génerer 3 QR Code. Ces 3 QR Code seront scannés par le logiciel d'enrôlement pour recuperer ces données biographiques et ainsi eviter la saisie. Cette application permet de reduire le temps passé dans le centre d'inscription par un réquerant.

About

Superheat Subcooling PT Chart

Features

Read full description

The HVAC tech's superheat & subcooling calculator — charge diagnosis and PT chart in one honest tool. Pick the refrigerant, enter your gauge pressure and line temperature, and read superheat, subcooling and saturation temperatures live. Choose the charging method — TXV/EEV (subcooling) or fixed orifice (superheat) — and get a clear verdict against the target: on target, check, or off target, with the direction: add charge or recover charge. A built-in PT quick-look table shows saturation temperatures around your reading, with separate dew/bubble columns for zeotropic blends. Works in °F/psi or °C/bar — one global toggle. FREE • R-410A with full superheat, subcooling and TXV charge diagnosis • PT chart around your gauge reading • Share results as text PRO • All 7 refrigerants: R-410A, R-32, R-454B, R-22, R-134a, R-407C, R-404A • Fixed-orifice target superheat table (indoor wet-bulb × outdoor dry-bulb) • Save readings to history • Share clean PDF reports Built for gloves and rooftop sun: big keypad, huge results, Outdoor Bright mode. Everything stays on your phone — fully offline, no account, no tracking. Results are a field aid; always verify targets with the manufacturer's data. ——— Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Privacy Policy: https://hdappstudio.com/superheatcalc/privacy/

Screenshots

PrerAp4 screens

Superheat Subcooling PT Chart4 screens

Verdict

The call

The clearest difference is in-app purchases: PrerAp at none against Superheat Subcooling PT Chart's 3. PrerAp also leads on iOS requirement (12.0 vs 16.0). Superheat Subcooling PT Chart's advantage is update cadence (every 2 months vs every 5 months). On price, ads 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

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. Superheat Subcooling PT Chart sells 3 in-app purchases, starting at $2.99 per month. PrerAp asks for nothing beyond the download.

UpkeepUpdate frequency

PrerAp ships an update every 5 months, Superheat Subcooling PT Chart every 2 months. The most recent releases landed on October 7, 2026 and October 29, 2026 respectively.

Scorecard3 real differences · 7 level

PrerAp versus Superheat Subcooling PT Chart: the parameters behind the verdict, then further details
Parameter	PrerAp	Superheat Subcooling PT Chart
Price	Free	Free
Rating	4.5 (2 ratings) — better	—
Positive reviews	0.0% of reviews	—
Number of ratings	2 — better	—
Update frequency	Every 5 months	Every 2 months — better
Ads	No	No
In-app purchases	No — better	Yes
Monetization	Free	—
Devices	iPhone, iPad, iPod — better	iPhone, iPad
Requires iOS	12.0 — better	16.0
Further details — not scored
Size	29 MB	10 MB
Age rating	4+	4+
Developer	Evolve (RDC)	HD YAPIMCILIK VE TEKNOLOJI ITHALAT IHRACAT TICARET LIMITED SIRKETI

In-app purchases

None

PrerAp

No in-app purchases

3 purchases

Superheat Subcooling PT Chart

Subscriptions2

Superheat Pro — Monthly$2.991 Month
Superheat Pro — Yearly$14.991 Year

One-time1

Superheat Pro — Lifetime$29.99

Questions

Is PrerAp free?

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

Is Superheat Subcooling PT Chart free?

Superheat Subcooling PT Chart is free to download, with in-app purchases available.

Do PrerAp or Superheat Subcooling PT Chart have ads?

Neither PrerAp nor Superheat Subcooling PT Chart shows ads.

Which is updated more often, PrerAp or Superheat Subcooling PT Chart?

PrerAp ships an update every 5 months, and Superheat Subcooling PT Chart every 2 months. Most recently, PrerAp was updated on October 7, 2026 and Superheat Subcooling PT Chart on October 29, 2026.