CMPLTE SMS vs SBK Flex
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
CMPLTE SMS
Communicate with customers using your business phone number for texts and picture messages. Manage customer databases, send promotional blasts, and allow easy customer contact without requiring them to download an app.
- Send/receive texts and picture messages
- Use business phone number for texting
- Access messages on multiple devices
- Multiple users can access one number
- Build customer database
- Send promotional blasts
- Customer opt-in for offers
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Your customers may already be texting your business number and wondering why you are not responding! Make and receive text messages using your business phone number! • Use your business phone number to text instead of your personal number • Send and receive text and picture messages to/from any cell phone number in the continental US View your messages on multiple devices: • Use your account on multiple devices with one sign-in • Access your messages from any computer via your browser (Chrome/Firefox/Edge) • Multiple users can access the same number so you or your team can reply to any message Build your customer database and send "blasts" with your latest promotions & offers: • Ask your customers to opt-in to receive offers & messages from your business • Build your customer database • Reach out to you customers when you have a sale/promotion or want to share information with them Enable your customers to communicate with you with the ease and convenience that they have when texting with friends and family. No need to download any messaging "app" to contact you - they can simply text your business number and get in touch. Meet your customers where they are and enhance their experience with your business.
SBK Flex
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SBK Flex is designed for SBK Telecom customers. An active SBK Telecom account is required to use the app. With simple setup, reliable connection, and professional features, SBK Flex keeps you connected whether you’re on the road or in the office. If you’re already using SBK Telecom services, SBK Flex gives you full calling capability in the palm of your hand.
Screenshots
Verdict
The clearest difference is update cadence: SBK Flex at every 4 weeks against CMPLTE SMS's every 20 months. CMPLTE SMS's advantage is device support (3 vs 1) and iOS requirement (14.0 vs 16.0). 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.
CMPLTE SMS ships an update every 20 months, SBK Flex every 4 weeks. The most recent releases landed on October 20, 2026 and October 5, 2026 respectively.
| Parameter | CMPLTE SMS | SBK Flex |
|---|---|---|
| Price | Free | Free |
| Rating | 5.0 (2 ratings) — better | — |
| Number of ratings | 2 — better | — |
| Update frequency | Every 20 months | Every 4 weeks — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | — |
| Devices | iPhone, iPad, iPod — better | iPhone |
| Requires iOS | 14.0 — better | 16.0 |
| Further details — not scored | ||
| Size | 51 MB | 117 MB |
| Age rating | 4+ | 12+ |
| Developer | Textable | SBK Telecom |
In-app purchases
CMPLTE SMS
No in-app purchases
SBK Flex
No in-app purchases









