Key Takeaways
- Monthly operator cost on an open-source Android SMS gateway is still the carrier: prepaid top-ups or postpaid SMS — GitHub does not sell airtime.
- Capcom-class OSS APKs are a different product. sms-gateway.app is a hosted control plane + official APK, priced by devices and send volume.
- Estimate: (segments × operator rate) + device electricity/SIMs + (if you use us) plan fee. Do not invent $0.0x overage from us.
- Unicode concatenates. OTP isolation does not change the per-part carrier bill.
- Free on our platform is 300 SMS lifetime. Starter, Professional, and Business list Unlimited SMS as platform send volume; that is not unmetered carrier SMS.
Two bills, not one GitHub star
OSS hub: Android SMS gateway open source. Setup honesty: OSS setup. Product pricing: devices and send volume. Core cost spoke: gateway-server operator cost.
Confirm our API only if you use this product: Developer Center. We do not paste a named OSS README.
Operator vs platform vs hosting
Operator: prepaid pulsa or postpaid SMS packs on the SIM. Platform (us): device count + send volume. OSS self-host: VPS, TLS, backups, your time. All three can be true in one month.
“If the spreadsheet has one row called ‘SMS,’ you will be surprised by concatenation, failed retries, and the phone that sits on a charger.”
Cost line items
| Line | Who bills | Miss |
|---|---|---|
| SMS parts | Carrier | Counting rows not segments |
| Failed retries | Carrier again | Unknown ≠ auto-resend |
| SIMs / devices | You | Idle spare phones |
| Hosted plan | Us, if you use us | Treating OSS license as our SKU |
| VPS for OSS server | Cloud vendor | Assuming GitHub hosts the radio |
OSS is not free pulsa
Prepaid vs postpaid: SIM choice. Pairing (this product): setup.
Count parts, not rows
GSM-7 vs UCS-2. Isolate OTP.
Next steps
Log segments for a week on a staff SIM. Fill the three columns. Operator credit stays yours.
Related product pages
Jump to the live product docs for this topic—not another long-form article.
- SMS API documentationLive endpoint reference
- device and SMS volume pricingPlans and allowances
- Android SMS gateway product guideDefinition, product, and how to buy
- download the Android gateway appGet the APK
