KOLLME vs SilverDialer
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
KOLLME
This app provides high-quality, secure, and affordable international voice calls using VOIP technology. It functions as a SIP-based soft phone, allowing users to connect with friends and family globally at low rates with crystal-clear quality. It integrates seamlessly with device contacts and works across various network types.
- High-quality international calls
- Affordable call rates
- Secure and reliable communication
- SIP-based softphone
- Works worldwide
- Integrates with contacts
- Crystal clear voice quality
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With its simple and intuitive user interface, KOLLME is the solution to making high quality calls for a fraction of the cost. Utilizing the latest the latest advances in VOIP technology, you can be ensured that all your communications are secure and affordable. • KOLLME is a SIP-based soft phone. You can call your friends and family from KOLLME with lowest international call rates! And very good quality. KOLLME for iPhone, iPad and iPod Touch let you make voice call worldwide with the finest voice quality.. App Benefits: •Works from all over the world •Uses iPhone contacts •Crystal Clear Quality •Lowest International Rates •Satisfaction guaranteed! • SIP-based softphone with exceptional voice quality • Works from Wifi/3G/GSM • Support for DTMF • Easy contact book, call history. In addition to your cost savings, we offers: • Secure and reliable communication • Compatible with VOIP switches supporting standard SIP • Unique anti-block solution • Option to brand own dialer • Advance Echo Cancellation • Flexible integration with your phone book contacts • Screen display for your call history, call timer and balance
SilverDialer
Make affordable international calls using your iPhone contacts. Enjoy crystal-clear quality and low rates for VoIP calls over Wi-Fi or cellular data. Track call history and balance information easily.
- VoIP calls
- Uses iPhone contacts
- Low international rates
- WIFI, 4G/3G, 2G EDGE connectivity
- Balance information
- Call status logs
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App Benefits: •Uses iPhone contacts •Crystal Clear Quality •Lowest International Rates •Satisfaction guaranteed! •With this application, user can make cheap VOIP calls. Main features: * Making and receiving VoIP calls * Connectivity through WIFI, 4G/3G,2G EDGE * Integrated contacts from the phone * Loudspeaker * Balance information * Time, call status logs How to Activate: 1. Go to the App Store and download 'SilverDialer' on your iPhone, iPad and or iPod. 2. Launch 'SilverDialer' => Settings => enter operator code, your username and PIN. 3. Launch 'SilverDialer' and dial destination number using any of the Dial formats or directly from the Contact list.
Screenshots
Verdict
The clearest difference is review sentiment: KOLLME at 100% against SilverDialer's 25%. KOLLME also leads on rating (5.0 vs 3.4) and update cadence (every 6 days vs every 2 months). SilverDialer's advantage is ratings volume (5 vs 1). On price, ads, in-app purchases and monetization model 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.
KOLLME holds the better App Store score, 5.0 against 3.4. That said, the two scores are not equally well evidenced: SilverDialer has 5 ratings behind it against 1, so its average is the more settled of the two. Written reviews point the same way: 100% of KOLLME's written reviews are positive against 25% of SilverDialer's.
KOLLME ships an update every 6 days, SilverDialer every 2 months. The most recent releases landed on October 10, 2026 and October 7, 2026 respectively.
| Parameter | KOLLME | SilverDialer |
|---|---|---|
| Price | Free | Free |
| Rating | 5.0 (1 ratings) — better | 3.4 (5 ratings) |
| Positive reviews | 100.0% of reviews — better | 25.0% of reviews |
| Number of ratings | 1 | 5 — better |
| Update frequency | Every 6 days — better | Every 2 months |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | Free |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 8.0 — better | 15.0 |
| Further details — not scored | ||
| Size | 20 MB | 88 MB |
| Age rating | 4+ | 4+ |
| Developer | Four Square Technologies Ltd | REVE Systems (S) Pte. Ltd. |
Customer experience
KOLLME
SilverDialer
In-app purchases
KOLLME
No in-app purchases
SilverDialer
No in-app purchases









