Temp Converter + vs Tap & Drill Size Reference
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Temp Converter +
Easily convert temperatures between Celsius, Fahrenheit, and Kelvin. This utility app is ideal for students and travelers needing quick, offline conversions. Share calculations with formulas included.
- Celsius, Fahrenheit, Kelvin conversion
- Offline functionality
- Formulas included
- Share calculations
- Multi-language support
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Temperature Converter – Easy Unit Conversion Convert between Celsius (°C), Fahrenheit (°F), and Kelvin (°K). Perfect for students, travellers who needs quick temperature conversions. Features: • Convert between Celsius, Fahrenheit, and Kelvin instantly. • Easy-to-use interface with Formulas. • Works offline—no internet needed. • Share the Calculation with formulas. App available in English, French, German, Italian, Dutch, Spanish, Portuguese and Chinese
Tap & Drill Size Reference
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Standing at the mill and can't remember the right drill size for an M8x1.25 tap? This app gives you the answer faster than flipping through a chart book. Select thread type (UNC, UNF, Metric), pick your size, and instantly see the recommended tap drill, clearance drill, thread percentage, and decimal equivalent. No searching, no guessing. TAP DRILL CALCULATOR: Select thread standard and size to get tap drill size, clearance drill, and thread percentage. Covers M3 to M24 metric, #0 to 1 inch imperial. DRILL CHART: Full reference table with tap drill, clearance drill, and thread percentage for every common size. One-tap lookup. THREAD SPECIFICATIONS: Detailed data for each size: pitch, threads per inch (TPI), major diameter, minor diameter, and pitch diameter for UNC, UNF, and ISO Metric standards. FAVORITES: Save your most-used tap and drill combinations for instant access on repeat jobs. Works completely offline. No account required. Built for machinists, CNC operators, and fabrication shops who need fast, accurate thread data at the machine.
Screenshots
Verdict
The clearest difference is price: Temp Converter + at Free against Tap & Drill Size Reference's $0.99. Tap & Drill Size Reference's advantage is ads (none vs shown). On update cadence, in-app purchases, device support and iOS requirement 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
Temp Converter + is free to download; Tap & Drill Size Reference costs $0.99 up front. Neither carries in-app purchases, so what you see is what you pay.
Temp Converter + ships an update every 2 months, Tap & Drill Size Reference every 6 weeks. The most recent releases landed on October 7, 2026 and September 26, 2026 respectively.
| Parameter | Temp Converter + | Tap & Drill Size Reference |
|---|---|---|
| Price | Free — better | $0.99 |
| Rating | 4.9 (7 ratings) — better | — |
| Number of ratings | 7 — better | — |
| Update frequency | Every 2 months | Every 6 weeks — better |
| Ads | Yes | No — better |
| In-app purchases | No | No |
| Monetization | Ad-supported | — |
| Devices | iPhone, iPad | iPhone, iPad |
| Requires iOS | 17.6 | 17.0 — better |
| Further details — not scored | ||
| Size | 41 MB | 1 MB |
| Age rating | 4+ | 4+ |
| Developer | V PUGAZHENTHI | Shanghai Sheyuan Network Technology Co., Ltd. |
In-app purchases
Temp Converter +
No in-app purchases
Tap & Drill Size Reference
No in-app purchases
Questions
Is Temp Converter + free?
Is Tap & Drill Size Reference free?
Do Temp Converter + or Tap & Drill Size Reference have ads?
Which is updated more often, Temp Converter + or Tap & Drill Size Reference?
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