Who Called Me vs Konvert
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Who Called Me
Identify unknown callers by searching phone numbers. This app uses a comprehensive database, supplemented by social media and geo-data, to provide real results. Keep track of your search history directly within the application.
- Identify unknown callers
- Comprehensive phone number database
- Social media and geo-data integration
- Search history tracking
- Copy and paste number search
Read full descriptionHide full description
Have you ever missed a call from a number you don't recognize, and want to know who called? Now you can find out, with Who Called Me. All new version 2.0! Rewritten from the ground up using a comprehensive and up to date phone number database. No more crowdsourcing data - you'll always get real results from the phone company, supplemented with social media and geo-data when available. Copy and paste from the phone app for quick results. Your search history is kept in app so you'll always know who called. Now you can know who's calling you - with Who Called Me. The app download includes credits for 4 number searches and supports US phone numbers.
Konvert
This app provides a simple and intuitive way to perform unit and currency conversions. It features a clean design, supports numerous categories and units, and offers convenient features like real-time conversion and widget integration.
- Easy to use with clean design
- 24 categories and hundreds of units
- Converts as you type
- Today widget for last conversion
- 3D Touch shortcut for currency converter
- Localized in multiple languages
Read full descriptionHide full description
Featured by Apple on 60+ countries. “Konvert is a beautifully simple unit-conversion app for iPhone” - TheNextWeb “Conversions Have Never Been Simpler With Konvert” - AppAdvice Features: • Easy to use with clean design • 24 categories and hundreds of units • You can change the order of categories • You can see your last conversion with Today widget • You can copy your last conversion with 3D Touch • 3D Touch shortcut for currency converter • Converts as you type a number • It works with our “Kalkulator” app, you can use results within these apps • iPhone 5, 8, 8plus, XS, XSMAX, XR support • Localized in Japanese, Spanish, German, Italian, Turkish Categories & Units: • Angle : ° , g, rad, turn • Area : m², ac, a, ha, cm², dm², dam², hm², inch², km², mi², mm², yard², ft² • Base : 10, 16, 2, 8 • Currency : USD, EUR, JPY, GBP, TRY, CHF, AED, ARS, AUD, AZN, BGN, BHD, BOB, BRL, CAD, CLP, CNY, COP, CUP, CZK, DKK, DZD, EGP, GEL, HKD, HRK, HUF, IDR, ILS, INR, IQD, IRR, KRW, KWD, KZT, LTL, LYD, MXN, MYR, NOK, NZD, PEN, PHP, PKR, PLN, PYG, QAR, RON, RUB, SAR, SEK, SGD, SYP, THB, TMT, TND, TTD, TWD, UAH, UYU, VEF, ZAR … • Energy : J, kWh, BTU, cal, erg, kJ, kcal • Length : m, dm, mm, inch, yard, ft, cm, km, mi, NM • Mass : kg, lb, st, oz, t, ton, LT, gr, mg, mcg • Power : W, BTUhr, BTUs, cals, kcals, kW, hp • Speed : kmh, mph, fts, m/s, knot, mach, c (speed of light) • Temperature : C, F, K, R, D • Time : hr, d, m, w, yr, ns, μs, ms, s • Volume : m³, l, ml, cm³, cu in, cu yd, cu ft, (US)gal, (UK)gal,qt, pt, cup, fl oz, tbsp, tsp, bbl(fluid), bbl(oil), bbl(dry) • Acceleration : ms², Gal, g, ins², kms², mis² • Data : B, KB, MB, GB, TB, KiB, MiB, GiB, TiB, bit, Kbit, Mbit, Gbit, Tbit • Density : grcm³, kgm³, grl, ozgal, lbcu ft, kgl • Flow Rate : ls, lmin, lhr, m³s, m³mi, m³hr, cu fts, cu ftmin, cu fthr, gals, galmin, galhr, bbl(o)d, bbl(f)d • Force : N, dyn, pdl, kp • Frequency : Hz, kHz, MHz, GHz, rpm, rps, radmin, rads • Fuel : km/l, l/100km, l/100mil, gal/100mil, imperial gal/100mil, mpg, mpeg • Illuminance : lx, lmcm², lmm², mcd, ph, ph, nx • Pressure : b, psf, psi, Pa, torr, atm • Radiation : sv, gy, jkg, m²s², rem, R/h • Torque : Nm, Ncm, Nmm, kNm, dynm, ozf in, lbf ft, lbf in • Typography : pt, px(72), px(96), px(150), px(300), mm, cm, in, twip, em, pica
Screenshots
Verdict
The clearest difference is review sentiment: Konvert at 79% against Who Called Me's 2%. Konvert also leads on rating (4.8 vs 1.3) and in-app purchases (none vs 1). Who Called Me's advantage is price ($0.99 vs $1.99) and iOS requirement (7.0 vs 26.0). On 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
Who Called Me costs $0.99 and Konvert $1.99 up front. Who Called Me sells 1 one-off in-app purchase. Konvert asks for nothing beyond the download.
Konvert holds the better App Store score, 4.8 against 1.3. That said, the two scores are not equally well evidenced: Konvert has 364 ratings behind it against 12, so its average is the more settled of the two. Written reviews point the same way: 2% of Who Called Me's written reviews are positive against 79% of Konvert's.
Who Called Me ships an update every 33 months, Konvert monthly. The most recent releases landed on October 24, 2026 and October 23, 2026 respectively.
| Parameter | Who Called Me | Konvert |
|---|---|---|
| Price | $0.99 — better | $1.99 |
| Rating | 1.3 (12 ratings) | 4.8 (364 ratings) — better |
| Positive reviews | 1.7% of reviews | 78.6% of reviews — better |
| Number of ratings | 12 | 364 — better |
| Update frequency | Every 33 months | Monthly — better |
| Ads | No | No |
| In-app purchases | Yes | No — better |
| Monetization | Free with in-app purchases | Free — better |
| Devices | iPhone, iPod — better | iPhone |
| Requires iOS | 7.0 — better | 26.0 |
| Further details — not scored | ||
| Size | 3 MB | 2 MB |
| Age rating | 4+ | 4+ |
| Developer | LTS Inc. | InnovationBox |
Customer experience
Who Called Me
Konvert
User reviews
Who Called Me
From 12 App Store ratingsRoom to improve
- 💸 Misleading pricing/hidden charges
- 🚫 Does not work for UK numbers
- 🤷 No information provided
- ❌ Useless/worthless app
- 💰 Waste of money
Konvert
From 364 App Store ratingsWhat we love
- 🎨 Beautiful, clean, and intuitive user interface design
- ⚡ Fast and easy to use for quick conversions
- 📊 Comprehensive range of unit conversions available
- ✨ Smooth animations and polished visual presentation
- 🔄 Works offline for currency and unit conversions
Room to improve
- 💱 Exchange rates not updating or frequently inaccurate
- 🐢 Cumbersome unit selection process (swiping through tiny windows)
- 📉 Lack of developer support and long periods without updates
- ❌ Missing common conversion categories (volume/liquid conversions)
- 🔢 Limited currency options (only ~10 out of 150+ worldwide currencies)
Bugs and requests
Who Called Me
Reported bugs
8 issues- App does not work
- Search found nothing
- Numbers come up Unknown
- Charged for searches
- App crashes constantly
Show 3 moreShow fewer
- App locks up and shuts down
- Does not provide claimed information
- Signed up for additional services
Requested features
5 requests- Support for UK numbers
- Clearer pricing upfront
- Tutorial or help section
- Information on who called from 800 numbers
- Previous functionality restored
Konvert
Reported bugs
5 issues- Exchange rates not updating properly
- Inaccurate currency conversion rates (off by significant margins)
- Data conversion errors (KB to Bytes calculation incorrect)
- Unit arrangement feature non-functional
- Missing units in various categories despite being listed
Requested features
10 requests- Add volume/liquid conversions (ml to oz, liters, etc.)
- Expand currency list to include more world currencies
- Improve unit selection interface (tap-to-select instead of swiping)
- Add more measurement units (miles per gallon, stone weight, etc.)
- Implement different color themes or dark mode
Show 5 moreShow fewer
- Add ability to customize or hide categories
- Include decibel conversions
- Add Chinese language support
- Alphabetical ordering of units
- Custom conversion creation feature
In-app purchases
Who Called Me
- 4-credit search pack$0.99
Konvert
No in-app purchases
Questions
Is Who Called Me free?
Is Konvert free?
Which has better reviews, Who Called Me or Konvert?
Do Who Called Me or Konvert have ads?
Which is updated more often, Who Called Me or Konvert?
Other comparisons















