# 1Contact Pro: Clean & Backup — user reviews > 58 indexed App Store user reviews of 1Contact Pro by Roxwin Vietnam Technologies Company Limited, rated 4.50/5 from 363 ratings. - Source: https://appshunter.io/ios/app/1contact-pro-clean-and-backup/id1441863446/reviews - App overview in markdown: https://appshunter.io/ios/app/1contact-pro-clean-and-backup/id1441863446.md - Rating breakdown: 5★ 277 · 4★ 35 · 3★ 21 · 2★ 6 · 1★ 24 ## What do users think of 1Contact Pro? Overall sentiment: negative **Pros** - 👍 Useful for managing contacts - 🚀 Quick and easy duplicate merging - 💰 Great value, one-time purchase - 🌟 Excellent customer support - ⏱️ Time saver for contact management - ✅ Supports T9 contact dialing **Cons** - 💥 App crashes frequently - 📉 Significant lag and freezing - ❌ Data loss (contacts deleted) - ❓ Incomprehensible interface (no Chinese) - 🚫 Full-screen ads in Pro version - ⚠️ Unexpected charges - 🗙 Poor duplicate merging (loses data) - 🗙 Contacts scrambled after merging **Commonly reported bugs** - App crashes when merging duplicates - App lags and stops loading at duplicate contact section - Backup not working correctly, only sends one name - Korean names appear incorrectly - App crashes when searching for duplicates - App freezes or crashes during duplicate search - Contacts deleted when trying to remove duplicates - Numbers are reversed in merging - App doesn't open or load anything - App deletes non-duplicate contacts - App keeps processing without finishing tasks - Cannot sign up, email not sent, cannot use Gmail or Facebook **Most requested features** - Add Arabic language support - Include a dialer in the app - Add call log history ## Newest reviews (10 of 58) ### 3/5 — App Crashes *2024-12-04, version 2.0.2* The app crashes when merging duplicates ### 3/5 — Back up not working correctly *2022-12-10, version 2.0.2* When doing backup and sending to email back produce only one name and no of other 200+ ### 2/5 — Bug report *2020-10-22* When typing korean name, some names appears incorrectly. ### 5/5 — Great app to manage contacts *2020-06-17* Quick and easy to merge or remove duplicate contacts. ### 5/5 — المغرب *2020-05-21* جميل ### 5/5 — لا يوجد فرق بين النسخة المجانية There is no difference between the free version *2020-02-25, version 2.0.2* There is no difference between the free version ### 2/5 — 没中文 看不懂 *2020-01-28* 就没有中文吗，不知道干啥的 ### 2/5 — Долго думало и вылетало *2020-01-14* Пять раз вылетело и долго думало пока нашла дубликаты контактов, но почему то показала дубликатом два контакта( уник разница в фамилии в одну букву). Вообщем приложение сырое, постоянно вылетает, тел. XS ### 1/5 — Not working *2020-01-14, version 2.0.1* Still searching, not working, waitting over 20minutes... ### 1/5 — Slow and Crashing *2020-01-14, version 2.0.1* Useless ## Most critical reviews (10 lowest-rated) ### 1/5 — سيىء *2025-06-28, version 2.1.1* جداً ### 1/5 — Bâm1 phát mất luôn danh bạ mà không có cơ hội phục hồi. Điên luôn *2023-12-05, version 2.0.2* Bâm1 phát mất luôn danh bạ mà không có cơ hội p ### 1/5 — The app lags and it only stops in loading *2023-11-17, version 2.0.2* I have purchased the full version of the app but it is unfortunately lagging and does not do the job. It stops at loading at the duplicate contact section. ### 1/5 — 1Contact *2020-12-31, version 2.0.2* This is the worst contact manage ever .. will not let you undo something that was just done and it does not have any help notes or memos to guide thru certain steps. I don’t recommend it to anyone ### 1/5 — فاشل *2020-06-09, version 2.0.2* برنامج فاشل لا أنصح بتحميله يتم حذف اسماء غير المحدده والله ما انصح به ### 1/5 — Не работает *2020-05-02* Не ищет дупликаты, зависает ### 1/5 — Stay away *2020-04-29, version 2.0.2* Wiped out all my contacts ### 1/5 — Bad app *2020-03-07, version 2.0.2* All my contacts are deleted when trying to remove duplicates. Not happy with kind apps ### 1/5 — Useless *2020-01-30, version 2.0.2* This is how merge “works”: 1) find duplicate contact according, say, phone number, 2) create a new contact by copy name and number only 3) so, notes lost, birthday lost,... Dont wanna be a tester !! ### 1/5 — Не работает. Совсем! *2020-01-16* При поиске дубликатов приложение вылетает. ## Most praised reviews (10 highest-rated) ### 5/5 — Top *2025-11-03* Top ### 5/5 — اضافة *2025-04-19, version 2.1.1* ارجو اضافة الغة العربيه لاكن توجد مشكله في الدمج يتم عكس الارقام ### 5/5 — Excellent Support *2025-03-10, version 2.1.1* I've been using the 1Contact app for a few months now, and while the app itself is quite useful, what truly sets them apart is their exceptional customer support. I recently ran into an issue , and I was honestly expecting a frustrating back-and-forth with generic troubleshooting steps. Instead, I was blown away by the speed and efficiency of their support team. Within minutes of submitting my query, I received a personalized response from a real person, not an automated bot. What impressed me most was their genuine willingness to help. They didn't just give me a quick fix; they took the time to understand the root cause of the issue and provided clear, concise instructions. It's rare to find a company that values its customers this much. If you're looking for a contact management app with reliable support, 1Contact is definitely worth considering. Their team goes above and beyond to ensure a smooth and hassle-free experience. I highly recommend them! ### 5/5 — Recomendo *2024-06-09* Ótimo gerenciar de contatos, é possível excluir contatos duplicados, ou manualmente marcando vários de uma vez, entre outras funcionalidades. O diferencial dele é o valor, sendo uma compra única, sem esquecer que estamos no Brasil e aqui é tudo muito caro levando em consideração a nossa moeda, mas esse é um valor ótimo e entrega tudo muito bem! Podem comprar sem medo, é muito útil ### 5/5 — جميل *2023-05-07* شكرا الك ### 5/5 — Hi dev! *2023-02-10, version 2.0.2* Best app... ### 5/5 — شكراً للي صممه لاتكفي *2022-10-15, version 2.0.2* افضل تطبيق جربته لنسخ وحفظ الارقام ساعدني اكثر من مرة في استرجاع ارقام محذوفة من سنين ### 5/5 — Five stars *2022-05-06, version 2.0.2* 5 stars ### 5/5 — ا *2020-09-24, version 2.0.2* ممتاز جدا ### 5/5 — Great app *2020-07-14, version 2.0.2* Love all the tools, very user-friendly as well. --- *Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-08-19.*