DoubleSafe vs U
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
DoubleSafe
Enhance your online security with an extra layer of protection. This app provides two-factor authentication via push notifications or one-time passcodes to verify your identity during sign-ins.
- Two-factor authentication
- Push notification approvals
- One-time passcode generation
- Enhanced account security
- User account verification
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DoubleSafe is a two-factor authentication app that adds an additional layer of security, by requesting an additional code, when you sign in to your account. - If you choose to use Push Notifications, the DoubleSafe app will display a message asking you to 'Allow' or 'Deny' access to your user account. Confirm it is you logging in by selecting 'Allow'. - If you are using one-time passcodes, the DoubleSafe app will generate a one-time passcode that must be entered in order to access your account.
U
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U-Reach Mobile turns your iPhone into a full office extension for a connected U-Reach CloudPBX, letting you make/receive VoIP calls (Wi-Fi/cellular), use instant messaging, share files, manage contacts, check voicemail, and control your desk phone from anywhere, all while maintaining a single business identity with features like call transfer, forwarding, and conferencing for seamless remote work and reduced costs. Key Capabilities Make and receive enterprise VoIP calls over your Wi-Fi or mobile data networks to lower mobile voice charges One number reach to conceal your personal mobile phone number and ensure unified corporate identity Set up flexible ring strategy for U-Reach Mobile and the desktop phone Select different outbound routes for different destinations (local/long-distance/international, etc.) Corporate directory integration with lookup and visual status indicator (available/unavailable/busy) Configurable PBX features including Call Transfer, Call Forwarding, Call Waiting, DND, and Ring Timeout Support Push Notifications to alert users of incoming calls while conserving energy Main Features Call Forwarding Call History Call Route Selection Call Transfer Call Waiting Contact Management Corporate Directory Do Not Disturb Extension Status Hold & Resume Native Contacts Integration One Touch Recording Outbound Route Selection PUSH Notification Ring Strategy Selection Speed Dial/Favorite Voicemail
Screenshots
Verdict
DoubleSafe and U are too close to call on the numbers: across 5 compared parameters — price, ads, in-app purchases and device support among them — neither pulls far enough ahead to decide it. What separates them is feature set and interface, not measurable difference.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
Both are free to download. Neither carries in-app purchases, so what you see is what you pay.
| Parameter | DoubleSafe | U |
|---|---|---|
| Price | Free | Free |
| Rating | 2.2 (5 ratings) — better | — |
| Positive reviews | 33.3% of reviews | — |
| Number of ratings | 5 — better | — |
| Update frequency | Every 8 months | — |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | — |
| Devices | iPhone, iPad, iPod — better | iPhone, iPod |
| Requires iOS | 15.0 | 15 |
| Further details — not scored | ||
| Size | 9 MB | 68 MB |
| Age rating | 4+ | 4+ |
| Developer | Serverdata.Net, Inc. | Unify Marketing and Technology Solutions, LLC |
In-app purchases
DoubleSafe
No in-app purchases
U
No in-app purchases









