OnRelay vs LeakageMath
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
OnRelay
This business phone service allows you to manage your company's mainline calls and use your business phone numbers directly from your smartphone. It eliminates the need for traditional desk phones and on-premises hardware, offering features like auto attendants and call transfers. Seamlessly separate business and personal calls while enabling texting and instant messaging.
- Use business phone numbers on smartphone
- Manage company mainline calls
- Auto attendant and call transfers
- Separate business and personal calls
- Texting and instant messaging
- Works over any carrier, not VoIP
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OnRelay is a turn-key, software-only, mobile business phone service. OnRelay allows you to use your business phone numbers and manage your company mainline calls from your smartphone. OnRelay also eliminates the need and expense of land-line desk phones and their associated on-premises hardware, cabling and infrastructure. OnRelay’s office phone system uses standard cellular voice connections, it works over any carrier, and is not a VoIP app. OnRelay includes a comprehensive mainline feature with an auto attendant, call groups, easily configurable voice menus and extension transfers. OnRelay thereby allows a virtual or mobile organisation to effectively handle, distribute and respond to customer calls in a professional manner. The Office Phone App also lets you separate your office phone calls and your personal calls on your iPhone. You can seamlessly place and receive calls using either your direct office phone number, your main company number or your personal cell number. You can also easily control when you are available for office calls and see whether incoming calls are company mainline calls, direct office calls, or regular personal cell calls. Texting from both direct numbers and main company numbers are also fully supported, as well as instant messaging between extensions and between all members of a call group. For further information please see: Demo Video: www.onrelay.com/demo-video Licensing and Terms of Use: www.onrelay.com/about/software-licensing-terms-of-use Privacy Policy: www.onrelay.com/privacy-policy Service Level Agreement: www.onrelay.com/service-level-agreement
LeakageMath
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LeakageMath, a collaboration between the Society of Cable Telecommunications Engineers (SCTE) and ComSonics, Inc., offers an electronic version of the SCTE "Useful Leakage Formulas" Operational Practice (SCTE 222 2016) and provides the featured formulas in a calculator format. While specifically pointing to signal leakage, a bit of imagination allows use of some of the calculation and conversion formulas for general decibel-related math.
Screenshots
Verdict
The clearest difference is update cadence: OnRelay at every 3 weeks against LeakageMath's every 52 months. LeakageMath's advantage is device support (3 vs 1) and iOS requirement (12.0 vs 16.4). On price, ads and in-app purchases 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
Both are free to download. Neither carries in-app purchases, so what you see is what you pay.
OnRelay ships an update every 3 weeks, LeakageMath every 52 months. The most recent releases landed on June 12, 2026 and December 27, 2025 respectively.
| Parameter | OnRelay | LeakageMath |
|---|---|---|
| Price | Free | Free |
| Rating | 5.0 (2 ratings) — better | — |
| Number of ratings | 2 — better | — |
| Update frequency | Every 3 weeks — better | Every 52 months |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | — |
| Devices | iPhone | iPhone, iPad, iPod — better |
| Requires iOS | 16.4 | 12.0 — better |
| Further details — not scored | ||
| Size | 10 MB | 4 MB |
| Age rating | 4+ | 4+ |
| Developer | OR Inc | ComSonics, Inc. |
In-app purchases
OnRelay
No in-app purchases
LeakageMath
No in-app purchases









