# Ooma Office vs SAS Flex

The clearest difference is review sentiment: Ooma Office at 51% against SAS Flex's 25%. SAS Flex's advantage is update cadence (fortnightly vs every 6 weeks) and iOS requirement (15 vs 17.0). On price, ads, in-app purchases and monetization model there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

Ooma Office ships an update every 6 weeks, SAS Flex fortnightly. The most recent releases landed on October 16, 2026 and October 15, 2026 respectively.

## The numbers

| Metric | Ooma Office | SAS Flex |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.9 (9.5K ratings)](https://appshunter.io/ios/app/ooma-office/id963970727/reviews)** | — |
| Number of ratings | **9.5K** | — |
| Positive reviews | **50.6% of reviews** | 25.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 6 weeks | **Fortnightly** |
| Monetization | Free | Free |
| Size | 220 MB | 55 MB |
| Requires iOS | 17.0 | **15** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Ooma Inc.](https://appshunter.io/developer/348758105) | [Specialty Answering Service](https://appshunter.io/developer/922095753) |

## What reviewers say

### Ooma Office

[App page](https://appshunter.io/ios/app/ooma-office/id963970727)

This app allows small businesses to make and receive calls using their office phone number from anywhere. It offers features like a virtual receptionist, call transfers, and voicemail management, ensuring a professional image and never missing a client call. It can be used over Wi-Fi, even internationally, to avoid roaming charges.

**Highlights:** Virtual receptionist, Extension dialing, Call conferencing, Music-on-hold, Voicemail management, Call transfers, Wi-Fi calling

**Features:** Siri integration, Vision Pro support

**In-app purchases:** none

**What reviewers like**

- 🚀 Convenient and flexible
- 📞 Clear call quality
- 💻 Works well on desktop and mobile
- 🕰️ Reliable service

**What reviewers complain about**

- 🐛 Frequent app crashes and glitches
- 🔍 Unreliable notifications and missed calls
- ⏱️ Slow app performance and lags
- 🤖 Poor customer support

**Reported bugs**

- Login issues and account verification problems
- Inconsistent call handling across devices
- Voicemail and text message delivery failures

**Requested features**

- Ability to block callers
- Improved SMS/MMS functionality
- More customization options
- Seamless integration between desktop and mobile


### SAS Flex

[App page](https://appshunter.io/ios/app/sas-flex/id1532051532)

Manage your answering service from your phone. Listen to calls, read transcripts, text callers, and update schedules in real time. Improve customer relationships and ensure no calls are missed.

**Highlights:** Listen to call recordings, Read call transcriptions, Text callers directly, Manage on-call schedules, Review call activity, Block unwanted callers, Post operator alerts

**Features:** Apple Wallet, Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is Ooma Office free?

Ooma Office is free to download, with no in-app purchases.

### Is SAS Flex free?

SAS Flex is free to download, with no in-app purchases.

### Do Ooma Office or SAS Flex have ads?

Neither Ooma Office nor SAS Flex shows ads.

### Which is updated more often, Ooma Office or SAS Flex?

Ooma Office ships an update every 6 weeks, and SAS Flex fortnightly. Most recently, Ooma Office was updated on October 16, 2026 and SAS Flex on October 15, 2026.

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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*