Nitreo is another organic Instagram growth service that works by targeting rather than selling packs. It engages accounts based on chosen hashtags, locations and similar profiles, so the followers who come in are real people. Billing is a flat monthly plan with a couple of tiers.
Best for someone who wants hands off, real growth and is fine letting it build over time. It handles the daily interactions in the background. Since it only serves Instagram and the outcome depends on the niche, it is not a fit for fast numbers or other networks.